Kelley is artisan, Sumner is a factory manager. Indeed they cannot be using same tools or work on the same floor or within the same building. Blind trust in AI (even with guardrails) is a recipe for disaster. They have jumped to Rust to add more guardrails to their AI lunacy but it won't hold for long. At this point there's no single human who actually knows or understands the code and AI code is proven to have durability issues at scale. So direct rewrite gives a quick boost as code is ported from somewhat reviewed base onto new platform, but as new code gets added this will dissipate. It sounds like Bun issue is systemic Zig Rust or Pixie dust won't fix it.